Wheeler offers an extensive line of 1/4" screwdriver bits in Phillips and flat blade styles, as well as several model-specific designs that will be of great help to both the amateur and professional gunsmith. Bits are made from S2 tool steel and have a hardness of 56-58 HRC. Compatible with most removable bit screwdrivers.
Bits are made from S2 tool steel
Rockwell C hardness 56-58
Blade Dimensions (in inches):
Depth is a measurement of the usable portion of the blade, near the tip where the thickness is uniform.